The Research Of Library And Information Biog Search System Based On Domain Ontology

With the rapid development of Web2.0, Blog sharp increase in number of pages, how to find topics related to the Blog page to become an important research blog content search. Blog web resources as unique features, the search efficiency of the general Web search engine is not high, so the Blog Search Engine was born. Blog search engine technology available, however there are some deficiencies, and in the following three aspects:First, the existing research on the blog is not related to levels of semantic organization; Second, the current Blog search engine does not support semantic query expansion; Third, the Blog search engine’s search results are satisfactory. There is no blog devoted to the academic fields of the semantic search system, researchers generally available through existing tools such as general Web search engines to achieve retrieval. Therefore, developing a blog search system for a particular area of academic expertise will give researchers more convenient.This paper introduces the Semantic Web development background and the relevant principles of semantic search, then introduction the concept of ontology, detailed description of its function, structure, construction methods and description of tools, analysis of several pros and cons of building methods and tools, final selection seven-step method together with the Protege to build library and information ontology. Then, this article analyzes the thesaurus and ontology links, points out the similarity on its structure,explains the feasibility and necessity of conversion between ontology and thesauri, puts forward specific conversion steps.On this basis, the paper constructs the library and information domain ontology, shows the construction principle, steps, body structure and the construction of detailed examples, and designs algorithm to achieve ontologies generate and export. Then designed and implemented to the semantic retrieval system of library and information blog ontology. After that, the paper detailed analysis and study the overall structure and detailed module design, and function of the system was tested and evaluated. Paper proved the feasibility of the proposed method. On this basis, the paper explores the semantic search model of bolg and the semantic reasoning strategies, proposes ways to improve search efficiency. Finally, the paper summarizes the problems which this article studies exists, and proposes the following research direction and content.In the article, the library and information domain ontology construction method research based on the thesaurus, the research and the semantic search system of the bolg based on the library and information domain ontology driven is this article’s key research content and the innovation place.The prototype system shows the domain ontology and semantic blog search system based on thesaurus construction are feasible. Finally, the system was tested, search efficiency is improved. And has a test to the system, confirming the related function. So this paper has certain reference value and the practical significance.